21366735

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 39782400

約数和(自身を除く): 18415665

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 73, 79, 95, 195, 219, 237, 247, 285, 365, 395, 741, 949, 1027, 1095, 1185, 1235, 1387, 1501, 2847, 3081, 3705, 4161, 4503, 4745, 5135, 5767, 6935, 7505, 14235, 15405, 17301, 18031, 19513, 20805, 22515, 28835, 54093, 58539, 74971, 86505, 90155, 97565, 109573, 224913, 270465, 292695, 328719, 374855, 547865, 1124565, 1424449, 1643595, 4273347, 7122245, 21366735]

約数ペア:

[(1, 21366735), (3, 7122245), (5, 4273347), (13, 1643595), (15, 1424449), (19, 1124565), (39, 547865), (57, 374855), (65, 328719), (73, 292695), (79, 270465), (95, 224913), (195, 109573), (219, 97565), (237, 90155), (247, 86505), (285, 74971), (365, 58539), (395, 54093), (741, 28835), (949, 22515), (1027, 20805), (1095, 19513), (1185, 18031), (1235, 17301), (1387, 15405), (1501, 14235), (2847, 7505), (3081, 6935), (3705, 5767), (4161, 5135), (4503, 4745)]